Company lists · Data refreshed September 2026

Top 25 Communications companies based in Germany

Name: Communications companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 394 companies tracked

RevenueBase identified 394 communications companies headquartered in Germany as of September 2026 and tracks 6,962 professional contacts across them, including 2,627 with verified work emails. Berlin is the largest hub.

This list covers communications companies headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

394Companies

6,962Contacts tracked

2,627Verified emails

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The 25 largest communications companies based in Germany

Ranked by team size

Top 25 of 394 communications companies based in Germany, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to communications companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Damovo	Indirect evidence	Düsseldorf, GermanyHQ checked Sep 21, 2026	501-1,000	697 contacts →
	Indirect evidence “Damovo is an international ICT service provider supporting business customers across the world on their path to digitization.” Source: RevenueBase Database · checked Sep 21, 2026
2	Plusnet Gmbh	Indirect evidence	Köln, GermanyHQ checked Sep 21, 2026	201-500	248 contacts →
	Indirect evidence “Die Plusnet GmbH, eine Tochtergesellschaft der EnBW, ist ein deutsches Telekommunikationsunternehmen mit Fokus auf Geschäftskunden.” Source: RevenueBase Database · checked Sep 21, 2026
3	United Internet AG	Indirect evidence	Montabaur, GermanyHQ checked Sep 21, 2026	10001+	234 contacts →
	Indirect evidence “United Internet AG is a leading European internet company - forward-looking, open and versatile.” Source: RevenueBase Database · checked Sep 21, 2026
4	Sipgate	Indirect evidence	Düsseldorf, GermanyHQ checked Sep 21, 2026	201-500	201 contacts →
	Indirect evidence “Founded in 2004, we at sipgate were the first German VoIP provider and have been developing internet and telephony services ever since.” Source: RevenueBase Database · checked Sep 21, 2026
5	Netcom BW Gmbh	Indirect evidence	Ellwangen (jagst), GermanyHQ checked Sep 21, 2026	201-500	161 contacts →
	Indirect evidence “Schnelles Internet für die Region #vernetzt - mit Highspeed in Verbindung bleiben Die NetCom BW GmbH mit Sitz in Ellwangen wurde 2014 gegründet und ist eine Konzerngesellschaft…” Source: RevenueBase Database · checked Sep 21, 2026
6	DNS NET Internet Service Gmbh	Indirect evidence	Berlin, GermanyHQ checked Sep 21, 2026	201-500	145 contacts →
	Indirect evidence “Menschen mit Lichtgeschwindigkeit begeistern – das ist die Vision, die die rund 250 Mitarbeiter:innen der DNS:NET Familie antreibt.” Source: RevenueBase Database · checked Sep 21, 2026
7	Circet Deutschland SE	Indirect evidence	Bergisch Gladbach, GermanyHQ checked Sep 21, 2026	1,001-5,000	134 contacts →
	Indirect evidence “WER WIR SIND Die Circet Deutschland SE ist ein Unternehmen der Circet Group, dem führenden weltweiten Dienstleister für den Aufbau und die Wartung von…” Source: RevenueBase Database · checked Sep 21, 2026
8	Mugler SE	Indirect evidence	Oberlungwitz, GermanyHQ checked Sep 21, 2026	501-1,000	115 contacts →
	Indirect evidence “Bei der MUGLER SE dreht sich alles um Telekommunikation.” Source: RevenueBase Database · checked Sep 21, 2026
9	S-Kon Gruppe	Indirect evidence	Hamburg, GermanyHQ checked Sep 21, 2026	501-1,000	92 contacts →
	Indirect evidence “Seit 2003 sind wir erfolgreich als Fullservice Dienstleister in der Telekommunikationsbranche tätig.” Source: RevenueBase Database · checked Sep 21, 2026
10	Zener Telekom Gmbh	Indirect evidence	Kriftel, GermanyHQ checked Sep 21, 2026	201-500	85 contacts →
	Indirect evidence “Grupo Zener ist seit über 35 Jahren eine der führenden Anlagenbaufirmen in den Bereichen Mobilfunk, Glasfaserinstallation und erneuerbare Energien in spanischsprechenden Märkten…” Source: RevenueBase Database · checked Sep 21, 2026
11	Vitronet Gruppe	Indirect evidence	Essen, GermanyHQ checked Sep 21, 2026	1,001-5,000	68 contacts →
	Indirect evidence “Als Firmengruppe gemeinsam stark: Mit mehr als 2.700 Mitarbeitenden an über 40 Standorten sind wir deutschlandweit der führende Dienstleister für die Telekommunikations- und…” Source: RevenueBase Database · checked Sep 21, 2026
12	Gamma DE	Indirect evidence	Oberkotzau, GermanyHQ checked Sep 21, 2026	51-200	67 contacts →
	Indirect evidence “Die HFO Telecom GmbH verbindet modernste Technologien im Telekommunikationsbereich mit langjähriger Erfahrung.” Source: RevenueBase Database · checked Sep 21, 2026
13	HKT Gmbh	Indirect evidence	Bochum, GermanyHQ checked Sep 21, 2026	201-500	62 contacts →
	Indirect evidence “Als eines der führenden Unternehmen in den Bereichen Engineering und Operations sorgen wir bundesweit sowie auch international für funktionierende Infrastrukturen im Festnetz- und…” Source: RevenueBase Database · checked Sep 21, 2026
14	Leonet	Indirect evidence	Deggendorf, GermanyHQ checked Sep 21, 2026	51-200	62 contacts →
	Indirect evidence “LEONET ist seit über 16 Jahren auf dem Breitbandmarkt aktiv und setzt sich als Pionierunternehmen für digitale Chancengleichheit in ländlichen Regionen ein.” Source: RevenueBase Database · checked Sep 21, 2026
15	Riedel Networks	Indirect evidence	Butzbach, GermanyHQ checked Sep 21, 2026	51-200	60 contacts →
	Indirect evidence “Riedel Networks - tailormade media & telecommunication services Riedel Networks is a privately held, global network services provider, focused on tailormade networks.” Source: RevenueBase Database · checked Sep 21, 2026
16	Teledata Gmbh	Indirect evidence	Friedrichshafen, GermanyHQ checked Sep 21, 2026	51-200	51 contacts →
	Indirect evidence “Das TeleData Netz - das Netz der Zukunft?” Source: RevenueBase Database · checked Sep 21, 2026
17	Zwei Löwen Mediawerk Gmbh	Indirect evidence	Münster, GermanyHQ checked Sep 21, 2026	201-500	51 contacts →
	Indirect evidence “As Europe’s leading allround service provider for Telecommunications and Customer Relationship Management we strongly inspire our customers by offering them high-end technologies…” Source: RevenueBase Database · checked Sep 21, 2026
18	R-Kom Gmbh	Indirect evidence	Regensburg, GermanyHQ checked Sep 21, 2026	51-200	49 contacts →
	Indirect evidence “Die R-KOM Regensburger Telekommunikationsgesellschaft mbH wurde 1997 mit dem Ziel gegründet dem Markt ein alternatives, kostengünstiges und nachhaltiges Telekommunikationsangebot…” Source: RevenueBase Database · checked Sep 21, 2026
19	LEW Telnet Gmbh	Indirect evidence	Neusäß, GermanyHQ checked Sep 21, 2026	51-200	47 contacts →
	Indirect evidence “Folgen Sie für Nachrichten von LEW TelNet und der LEW-Gruppe.” Source: RevenueBase Database · checked Sep 21, 2026
20	Thüringer Netkom Gmbh	Indirect evidence	Erfurt, GermanyHQ checked Sep 21, 2026	51-200	41 contacts →
	Indirect evidence “Wir, die Thüringer Netkom, bringen Bewegung in Ihr Internet!” Source: RevenueBase Database · checked Sep 21, 2026
21	Deutsche Glasfaser Business	Indirect evidence	Borken, GermanyHQ checked Sep 21, 2026	51-200	41 contacts →
	Indirect evidence “Deutsche Glasfaser Business ist der Glasfaserspezialist für Geschäftskunden und Kommunalverwaltungen.” Source: RevenueBase Database · checked Sep 21, 2026
22	Dokom21	Indirect evidence	Dortmund, GermanyHQ checked Sep 21, 2026	51-200	40 contacts →
	Indirect evidence “DOKOM21 ist ein regionaler Telekommunikationsdienstleister mit Sitz in Dortmund.” Source: RevenueBase Database · checked Sep 21, 2026
23	Gelsen-Net Gmbh	Indirect evidence	Gelsenkirchen, GermanyHQ checked Sep 21, 2026	51-200	39 contacts →
	Indirect evidence “Besseres Internet mit zertifizierter Glasfaser erleben.” Source: RevenueBase Database · checked Sep 21, 2026
24	Greenfiber	Indirect evidence	Hamburg, GermanyHQ checked Sep 21, 2026	51-200	37 contacts →
	Indirect evidence “GREENFIBER ist Ihr Partner für schnelles, stabiles und sicheres Internet.” Source: RevenueBase Database · checked Sep 21, 2026
25	SH Business COM Gmbh	Indirect evidence	Herbolzheim, GermanyHQ checked Sep 21, 2026	51-200	36 contacts →
	Indirect evidence “SH business COM, zählt seit über 30 Jahren zu den größten und leistungsstärksten Kommunikationszentren in Deutschland.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: communications companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names communications companies.
Partial evidence: Its own public description names part of communications companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name communications companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 394 communications companies based in Germany

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Communications companies based in Germany at a glance

As of Sep 21, 2026

37.7%Verified-email coverage

17.7Average contacts per company

11-50Median size (employees)

4.8%Largest-city concentration · Berlin

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

178

11-50

103

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 394 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among communications companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Germany whose own description of what they do matches “communications companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names communications companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among communications companies, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 2,627 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names communications companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many communications companies are there based in Germany?

RevenueBase identified 394 communications companies headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Damovo, headquartered in Dusseldorf, tops this list with the largest team on record.

Which city has the most communications companies?

Berlin leads with 19 headquartered companies, followed by Hamburg (15) and Munchen (11).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 2,627 verified decision-maker contacts tracked across these 394 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.